CN204675720U - Power winch torque force limiting device - Google Patents

Abstract

A kind of power winch torque force limiting device, this torsion limiting mechanism is made up of a torsion shaft, a friction lining, a brake sheet, a dish type elastic component, an adjustment steady ring and a location volution, what an axis was established in this torsion shaft inside wears groove, front end is also shaped to a clamping groove, outer ring forming one spiral shell section, and offer an axially deep cave, location; This friction lining is the ring-type lamellar body of a surperficial tool rubbing effect; This brake sheet is the ring-type lamellar body making material shaping, and inner edge has a positioning convex body; This dish type elastic component is concave arc shape and the tool elasticity of compression; This adjustment steady ring outer shroud has most spacer, through selecting to this volution direction, location deviation; This location volution has the axis hole of the reverse negative thread of a tool, and on outer shroud, be provided with several detent be symmetrical set, and can support into stop for selected location sea whelk deviation.When the reverse torsion that bearing load produces exceed propulsion source can bear time, disconnect power transmission in time, avoid propulsion source to damage.

Description

Power winch torque force limiting device

[technical field]

The utility model is about a kind of power winch torque force limiting device, refers to that a kind of reverse torsion produced when bearing load exceedes propulsion source when can bear especially, disconnects power transmission in time, the power winch torque force limiting device damaged to avoid propulsion source.

[background technology]

Power winch is that design is used for using as hanging load or dilatory load, such as the most common: " the lift heavy winch " of high building Under-Slung Loads vertical lift is a kind of power winch; Again, being used for pulling the hoist cable facility that its car (he rescues) or dangerous situation move escape danger (saving oneself) before being installed on jeep, cross-country car, is also a kind of power winch.The start principle of power winch is by a propulsion source (such as power motor) output transfer motion power forward or backwards, after a speed reduction gearing effect, a cable pulley is driven to rotate forward or rotate backward, to send cable wire or to regain cable wire, load (weight, its car or its thing etc.) is lived by a vertical heavy gib head hooking in cable wire front end, moves to make this load.

Power winch in use because bearing load (goods or the personnel met with misfortune or article), its heavy burden exceedes the torsion (this relates to the load-carrying ability of propulsion source) that propulsion source can bear sometimes, think that the torsion that avoiding bears a heavy burden produces cannot bear for propulsion source, general meeting is provided with " the torsion limiting mechanism " of a weight overload protection in transmission device inside, in order to when occurring to bear a heavy burden the situation overloaded, this torsion limiting mechanism must slipping and no longer transmit power, to protect the transmission device (such as power motor and speed reduction gearing etc.) in power winch, avoid overload and cause the damage of parts fault.But, existing " current over-load protector " of the common employing of known power winch is as torsion limiting mechanism, it is when being strengthened by load torsion, propulsion source electric current also can strengthen, therefore via stopping during current overload powering to propulsion source, indirectly there is the effect limiting torsion, but when adopting " current over-load protector " as torsion limiting mechanism, because the stopping of " current over-load protector " and startup all have surge time, cannot at once tell on, therefore be installed in power winch, powerdriven phenomenon cannot be at once stopped when resulting from overburden, show in practical situation, be exactly when load-carrying overburden, result Power output also fails at once to stop, just stop after also continuing to export a bit of time, application so often causes operator at a loss as to what to do, obviously its practicality is not good, have much room for improvement.

[utility model content]

The purpose of this utility model namely provide a kind of reverse torsion produced when bearing load exceed propulsion source can bear time, disconnect power transmission in time, with avoid propulsion source damage situation occur power winch torque force limiting device.

For reaching above-mentioned purpose, the utility model designs a kind of power winch torque force limiting device, and textural have a support body, and a propulsion source being installed in this support body side, possesses the ability of outputting power; One drop-gear box being installed in this support body opposite side, inside is provided with a speed reduction gearing, accepts the power transmission of this propulsion source via a major axis, to carry out deceleration effort; And one is arranged at the middle cable pulley of this support body, accept the power drive rotation that this drop-gear box exports; By this propulsion source outputting power via in the power transmission process long shaft transmission to speed reduction gearing, be equiped with a torsion limiting mechanism; It is characterized in that: this torsion limiting mechanism is made up of a torsion shaft, a friction lining, a brake sheet, a dish type elastic component, an adjustment steady ring and a location volution, wherein, what an axis was established in this torsion shaft inside wears groove, front end is also shaped to a clamping groove, outer ring forming one spiral shell section, and offer an axially deep cave, location; This friction lining is the ring-type lamellar body of a surperficial tool rubbing effect; This brake sheet is the ring-type lamellar body making material shaping, and inner edge has a positioning convex body; This dish type elastic component is concave arc shape and the tool elasticity of compression; This adjustment steady ring outer shroud has most spacer, can through selecting to this volution direction, location deviation; This location volution has the axis hole of the reverse negative thread of a tool, and on outer shroud, be provided with several detent be symmetrical set, and can support into stop for selected location sea whelk deviation.

In above-mentioned power winch torque force limiting device, before this torsion limiting mechanism can be arranged on the speed reduction gearing that power enters in drop-gear box, it has an inner can be connected with this speed reduction gearing, this inner can one end offers a perforation, during assembling, this torsion shaft placed the perforation of this friction lining and this inner can, this friction lining is made to attach this torsion shaft, then be sheathed on outside this major axis by the groove of wearing of this torsion shaft, and make the clip end of this major axis end plant into contiguity joint in the clamping groove of this torsion shaft, in this inner can is outer, Gai brake sheet is sheathed in this torsion shaft again, and make its positioning convex body enter in this cave, location, then by this dish type elastic component, adjustment steady ring and location volution are sequentially sheathed in this torsion shaft, and the axis hole of this location volution is spirally connected with this spiral shell section engage, until this torsion shaft of packing, friction lining, inner can, brake sheet, dish type elastic component, adjustment steady ring and location volution, again the detent deviation that the spacer of this adjustment steady ring is corresponding on this location volution is supported into, system makes this location volution rotate to exit.

In above-mentioned power winch torque force limiting device, this torsion limiting mechanism can be arranged in the composition of speed reduction gearing, this speed reduction gearing has a first planet gear cluster, by three identical miniature gearss, axle center is jointly plugged on a pedestal and a lid and forms triangular form arrangement, these pedestal central authorities have a perforation, the face facing these miniature gearss offers a large storage tank, its inner rim is provided with some little Rong caves, this lid is that central authorities have a perforation, the perforation of this pedestal is corresponding with the perforation of this lid, this friction lining outer shroud has more some little beads, during assembling, this torsion shaft placed this dish type elastic component Ji Gai brake sheet, the positioning convex body of Gai brake sheet enters in the cave, location of this torsion shaft, then this torsion shaft placed the perforation of this pedestal, Gai brake sheet of Shi is attached at this pedestal back side, then this friction lining receives into the large storage tank of this pedestal with the state in its little bead these little Rong caves required in pairs, and placed for this torsion shaft, then this adjustment steady ring and location volution are sequentially sheathed in this torsion shaft, the axis hole of this location volution is spirally connected with this spiral shell section engage, until this torsion shaft of packing, dish type elastic component, brake sheet, pedestal, friction lining, adjustment steady ring and location volution, again the detent deviation that the spacer of this adjustment steady ring is corresponding on this location volution is supported into, system makes this location volution rotate to exit.

In above-mentioned power winch torque force limiting device, when this torsion limiting mechanism can be arranged on propulsion source outputting power, the axle center of this propulsion source is bonded to a sleeve, this sleeve is then shaped to a large storage tank away from the end in this axle center, its inner rim outermost section is more provided with most little Rong cave, this friction lining outer shroud has more some little beads, during assembling, this torsion shaft sequentially placed this friction lining, brake sheet, dish type elastic component, adjustment steady ring and location volution, this friction lining is made to invest this torsion shaft, and the positioning convex body of Gai brake sheet of Shi enters in the cave, location of this torsion shaft, and the axis hole of this location volution is spirally connected with the spiral shell section of this torsion shaft engage, until this torsion shaft of packing, friction lining, brake sheet, dish type elastic component, adjustment steady ring and location volution, again the detent deviation that the spacer of this adjustment steady ring is corresponding on this location volution is supported into, system makes this location volution rotate to exit, and then this torsion limiting mechanism is received into the large storage tank of this sleeve, and make the little bead of this friction lining corresponding little Rong cave inner position receiving into this sleeve one to one, and in the clamping groove of this torsion shaft of being planted the clip end of this major axis, reach connection joint.

The utility model advantage and effect are: provide a kind of reverse torsion produced when bearing load to exceed propulsion source when can bear, disconnect power transmission in time, the power winch torque force limiting device damaged situation to avoid propulsion source and occur.

[accompanying drawing explanation]

The stereoscopic figure of all embodiments of the utility model shown in Fig. 1.

It is the three-dimensional exploded view of the utility model first embodiment shown in Fig. 2.

It is the three-dimensional exploded view of another angle of the utility model first embodiment shown in Fig. 3.

It is the three-dimensional exploded view of torsion limiting mechanism in the utility model first embodiment shown in Fig. 4.

It is the assembled sectional view of the utility model first embodiment shown in Fig. 5.

It is the three-dimensional exploded view of the utility model second embodiment shown in Fig. 6.

It is the three-dimensional exploded view of another angle of the utility model second embodiment shown in Fig. 7.

It is the three-dimensional exploded view of torsion limiting mechanism in the utility model second embodiment shown in Fig. 8.

It is the assembled sectional view of the utility model second embodiment shown in Fig. 9.

It is the three-dimensional exploded view of the utility model the 3rd embodiment shown in Figure 10.

It is the three-dimensional exploded view of another angle of the utility model the 3rd embodiment shown in Figure 11.

It is the three-dimensional exploded view of torsion limiting mechanism in the utility model the 3rd embodiment shown in Figure 12.

It is the assembled sectional view of the utility model the 3rd embodiment shown in Figure 13.

Number in the figure is described as follows:

Power winch 1 support body 10 propulsion source 20 major axis 21

Axle center 22, clip end 212, clip end 211 soldered tooth 221

Sleeve 23 engages the large storage tank 232 little Rong cave 233 of internal tooth 231

Drop-gear box 30 bonnet 301 containing groove 302 bearing 303

Oblique friction face 312 speed reduction gearing 32 of interior toroidal shell 31 central perforation 311

First planet gear cluster 321 sections of axle 33 soldered tooth 331 soldered tooths 332

Engaging groove 333 engaging groove 334 knock hole 335 C shape clasp 336

Oblique friction face 341 round recessed 342 of elastic parts 337 Brake car block 34

Large perforation 343 cable pulley 40 dish type convex ring body 35 dish type position 351

Convex body 354 arrival slot 355 of pulling in inclined-plane, convex ring body position 352 353

Wedge type block 36 soldered tooth 361 C shape clasp 362 inclined-plane 363

Convex body 364 inner can 37 opening 371 of pulling bores a hole 372

Projection 373 torsion limiting mechanism A torsion shaft 38 wears groove 381

Clamping groove 382 spiral shell section 383 locates cave 385, recessed section 384 location

Ring wall 386 friction lining 391 brake sheet 392 positioning convex body 3921

Dish type elastic component 393 adjusts steady ring 394 spacer 3941 and locates volution 395

Axis hole 3951 detent 3952 pedestal 41 bores a hole 411

Large storage tank 412 little Rong cave 413 inserting hole 414 lid 42

To bore a hole toroidal shell 43 inner circular tooth 431 in 421 inserting holes 424 second

Torsion limiting mechanism B torsion shaft 48 wears groove 481 spiral shell section 483

The little bead 4911 of location cave 485 soldered tooth 486 friction lining 491

Brake sheet 492 positioning convex body 4921 dish type elastic component 493 adjusts steady ring 494

Volution 495 axis hole 4951 detent 4952 located by spacer 4941

Torsion limiting mechanism C torsion shaft 58 clamping groove 581 spiral shell section 583

Little bead 5911 brake sheet 592 of location cave 585 friction lining 591

Positioning convex body 5921 dish type elastic component 593 adjusts steady ring 594 spacer 5941

Location volution 595 axis hole 5951 detent 5952

Support body 10 propulsion source 20 major axis 21 clip end 211

Toroidal shell 31 in bonnet 301 containing groove 302 bearing 303

Central perforation 311 oblique friction face 312 speed reduction gearing 32 sections of axles 33

Soldered tooth 331 soldered tooth 332 engaging groove 333 engaging groove 334

The oblique friction face 341 of knock hole 335 elastic parts 337 Brake car block 34

Convex ring body position, large perforation 343 dish type convex ring body 35 dish type position 351 352

Convex body 354 wedge type block 36 soldered tooth 361 of pulling in inclined-plane 353

Convex body 364 inner can 37 of pulling in C shape clasp 362 inclined-plane 363

To bore a hole 372 torsion limiting mechanism A torsion shaft 38 clamping grooves 382

Spiral shell section 383 locates cave 385, recessed section 384 location ring wall 386

Friction lining 391 brake sheet 392 positioning convex body 3921 dish type elastic component 393

Volution 395 axis hole 3951 located by adjustment steady ring 394 spacer 3941

Detent 3952

[detailed description of the invention]

Because the utility model is provided with one " torsion limiting mechanism " in the power transmission process of power winch, exceed propulsion source with the torsion produced in bearing load can bear, timely disconnection power transmission, therefore this " torsion limiting mechanism " can be arranged on any position in power transmission process, such as can be arranged on (that is in speed reduction gearing front end) before the speed reduction gearing that power enters in drop-gear box, also can be set directly in the composition of speed reduction gearing, when also can be arranged on propulsion source outputting power, i.e. sequentially DETAILS SECTIONExample below.

First embodiment is about to " torsion limiting mechanism " and is arranged on (that is in speed reduction gearing front end) before the speed reduction gearing that power enters in drop-gear box, refer to shown in Fig. 1, the utility model first embodiment is a power winch 1, from large cage structure in appearance, there is a support body 10, one propulsion source 20 being installed in this support body 10 side, possess the ability exporting positive power or reverse power, such as, can be power motor; One drop-gear box 30 being installed in this support body 10 opposite side, inside is provided with a speed reduction gearing 32 (as shown in Figure 5), accepts the power transmission of this propulsion source 20, to carry out deceleration effort; And one is arranged at the middle cable pulley 40 of this support body 10, accept the power drive rotation that this drop-gear box 30 exports, to carry out the action sent cable wire (not being shown in figure) or regain cable wire.

Shown in Fig. 2-5, after this drop-gear box 30 takes bonnet 301 apart, have an axle center accepting this propulsion source 20 directly to drive the major axis 21 of synchronous axial system, in one, the central perforation 311 of toroidal shell 31 is stretched out, the end of this major axis 21 is the clip ends 211 being set as non-round shape, such as, can be hexagonal shape, the deepest inside end face central authorities of this bonnet 301 are set as a containing groove 302 (as shown in Figure 5), are placed in its inner position for bearing 303 adhesion, the inner space of this interior toroidal shell 31 and group are provided with a speed reduction gearing 32 (as shown in Figure 5), sequentially driven and slow down by the compound planet gears of some layers, jointly consist of a speed reduction gearing 32, the inner edge, outside of this interior toroidal shell 31 is an outer oblique friction face 312 tiltedly expanded, there is one section of axle 33, adopt no touch relation and be sheathed on (namely this major axis 21 interval shape is fed through longitudinal axis hole of this section of axle 33) on this major axis 21, the ring wall of its two end is respectively equipped with soldered tooth 331, 332 with the engaging groove 333 of ring-type, 334, and be provided with a knock hole 335 in axis body, this section of axle 33 tool soldered tooth 331 stretches in the central perforation 311 of this interior toroidal shell 31 with the end of engaging groove 333, and to be engaged with train of reduction gears 32 bridle joint by the soldered tooth 331 of this end and to arrange in interlock, and be inserted in this engaging groove 333 (as shown in Figure 5) by a C shape clasp 336, cannot exit arbitrarily to limit this section of axle 33, have an elastic parts 337, be advisable with volute spring, be set on this section of axle 33, one end is also inserted in this knock hole 335 inner position.

You mono-Brake car block 34, makes material shaping by rubber, and outer rim is formed as an outer oblique friction face 341 tiltedly expanded, after be formed as a round recessed 342 (as shown in Figure 3), central authorities then offer a large perforation 343, there is a dish type convex ring body 35, be shaped to suitable with robustness material, dish type position 351 and a convex ring body position 352 (as shown in Figure 2) can be divided into, wherein, this dish type position 351 directly amplexiform enter this Brake car block 34 round recessed 342 in, and by some lock-connecting pieces, (Gai Brake car block 34 and this dish type convex body 35 2 to be locked that to pull be one " common rotation body " by such as bolt and screw), and convex ring body position 352 can enter in the large perforation 343 of Gai Brake car block 34, an obvious spacing is had between the outer ring surface at this convex ring body position 352 and the inner ring surface of this large perforation 343, the outer wall end face at this convex ring body position 352 has the inclined-plane 353 of several height fluctuatings, outer wall opposite end place is then provided with the convex body 354 of pulling of a pair evagination, a shaping ring arrival slot 355 (as shown in Figure 3) on the aft end face at this convex ring body position 352, during assembling, Gai Brake car block of 34 and this both dish type convex body 35 are locked " common rotation body " after pulling and are set on this section of axle 33 as shown in Figure 5, the relation that mutual nothing directly drives, namely the another end of this elastic parts 34 supports in the ring arrival slot 355 of this convex ring body position 352 aft end face, to push away the tendency making this " common rotation body " have outside movement.

There is a wedge type block 36, its medium pore edge inwall is provided with soldered tooth 361, can be engaged with soldered tooth 332 bridle joint on this section of axle 33 ring wall and arrange in interlock, that is have between this section of axle 33 and this wedge type block 36 and mutually directly drive the relation of rotating, and buckled by one group of C shape clasp 362 and be located in the engaging groove 334 of this section of axle 33, with system, this wedge type block 36 cannot be gone beyond when this section of axle 33 superior displacement, this wedge type block 36 is provided with the inclined-plane 363 corresponding with the inclined-plane 353 of this dish type convex ring body 35 and convex body 354 of pulling and convex body 364 of pulling, these convex bodies 354 of pulling, on arranging, differential seat angle is slightly had both 364, there is an inner can 37, end towards this wedge type block 36 is all an opening 371 (as shown in Figure 3), end away from this wedge type block 36 offers a perforation 372, the convex body 364 of pulling of convex pull body 354 and this wedge type block 36 of this dish type convex ring body 35 of internal engagement, and on inner ring wall shaping one group of corresponding projection 373.

There is a torsion limiting mechanism A, by a torsion shaft 38, one friction lining 391, Yi brake sheet 392, one dish type elastic component 393, one adjustment steady ring 394 and a location volution 395 formed, wherein, what an axis was established in this torsion shaft 38 inside wears groove 381 (as shown in Figure 3), front end is also shaped to the clamping groove 382 of a non-round shape, such as can be hexagonal shape, with the corresponding cooperation in clip end 211 of this major axis 21, the reverse externally threaded spiral shell section 383 of a bit of tool of outer shroud intermediary form, front end is then a location recessed section 384, and select a place and offer an axially deep cave, location 385, rear end is tool one ring wall 386 then, this friction lining 391 is the ring-type lamellar body of a surperficial tool rubbing effect, this brake sheet 392 is the ring-type lamellar body making material shaping, and inner edge has a positioning convex body 3921, this dish type elastic component 393 is concave arc shape and the tool elasticity of compression, this adjustment steady ring 394 outer shroud has most spacer 3941, can through selecting to this location volution 395 direction deviation, this location volution 395 has the axis hole 3951 of the reverse negative thread of a tool, and on outer shroud, be provided with several detent 3952 be symmetrical set, and can support into stop for selected location sea whelk 3941 deviation.

Refer to shown in Fig. 5, during assembling, this torsion shaft 38 was placed the perforation 372 of this friction lining 391 and this inner can 37, this friction lining 391 is made to attach this ring wall 386, then be sheathed on outside this major axis 21 by the groove 381 of wearing of this torsion shaft 38, and make the clip end 211 of this major axis 21 end plant this torsion shaft 38 clamping groove 382 in do adhesion engage, in process, the plant of non-adhesion is done in the spacing that opening 371 end of this inner can 37 is also just planted between this convex ring body position 352 and this large perforation 343, convex body 364 of pulling simultaneously on this wedge type block 36 and this dish type convex ring body 35, the side of the 354 all projections 373 of position in this inner can 37 is adjacent, then, in this inner can 37 is outer, Gai brake sheet 392 is sheathed in this torsion shaft 38, its positioning convex body 3921 is made to enter in this cave, location 385, then by this dish type elastic component 393, adjustment steady ring 394 and location volution 395 are sequentially sheathed in this torsion shaft 38, and make the axis hole 3951 of this location volution 395 and this spiral shell section 383 do compactness to be spirally connected and to engage, until this torsion shaft 38 of packing, friction lining 391, inner can 37, brake sheet 392, dish type elastic component 393, till adjustment steady ring 394 and location volution 395 (also by both this torsion limiting mechanism A and this inner can 37 packing) in addition, certainly its packing degree (i.e. the amount of the being spirally connected number of axis hole 3951 and spiral shell section 383) torsion that can must bear depending on propulsion source 20 and adjust selected (torsion that propulsion source 20 can bear is directly proportional to packing degree), when after selected packing degree, the spacer 3941 of this adjustment steady ring 394 detent 3951 deviation of corresponding (vicinity) on this location volution 395 is supported into, with system, this location volution 395 cannot be rotated to exit, not corresponding (vicinity) namely will not bend to the spacer 3941 of detent 3951, finally, this bonnet 301 lid is covered, make the location of this torsion shaft 38 enter the inner ring inner position of bearing 303 accommodating in the containing groove 302 of this bonnet 301 for recessed section 384.

When starting this propulsion source 20 (no matter exporting positive power or reverse power), this major axis 21 drives by propulsion source 20 and rotates, and namely engage via the adhesion between this clip end 211 with this both clamping groove 382, this torsion limiting mechanism A and this inner can 37 Integral synchronous is driven to rotate, projection 373 again via this inner can 37 inside promotes these convex bodies 354 of pulling, 364 synchronous axial system, again because the soldered tooth 361 of this wedge type block 36 is engaged the relation arranged in interlock with soldered tooth 332 bridle joint on this section of axle 33 ring wall, this section of axle 33 is driven to rotate, and then make this speed reduction gearing 32 produce predetermined deceleration effort, and drive this cable pulley 40 to rotate, to carry out the action sent cable wire (not being shown in figure) or regain cable wire.

When this propulsion source 20 stops (may be stop via manipulation or stop because of unexpected power-off), this major axis 21, this torsion limiting mechanism A and this inner can 37 follow stopping all at once, cable wire so on this cable pulley 40 because of bear load-carrying therefore, so reverse torsion can be produced, and promote this section of axle 33 and this wedge type block 36 via the interlock of this cable wire and this speed reduction gearing 32 and produce and rotate backward action, therefore the convex body 364 i.e. projection 373 of this inner can 37 inside relative of pulling on this wedge type block 36 does departure motion, inclined-plane 363 instantaneously on this wedge type block 36 is at once corresponding and push the inclined-plane 353 of this dish type convex ring body 35, make this dish type convex ring body 35 toward this interior toroidal shell 31 direction quick travel, therefore the oblique friction face 341 of this Brake car block 34 pastes rapidly the oblique friction face 312 contacting this this interior toroidal shell 31, produce and Gai Brake car block 34 is braked the effect of Brake car, relatedly make this wedge type block 36, section axle 33, speed reduction gearing 32 and cable pulley 40 all stop action with cable wire.

Rotate no matter this propulsion source 20 is startups or stops operating, as long as the upper load-carrying of cable wire hanging, all can produce reverse torsion, when this reverse torsion is this Brake car effect and/or this propulsion source 20 is enough to bear, be then no problem in use.But; when this Gai Brake car effect of reverse torsion Shi and/or when cannot bear close to this propulsion source 20; then oppositely torsion can force this wedge type block 36 to promote this inner can 37 to rotate backward; stop operating for now following propulsion source 20 because of this torsion shaft 38; therefore the rotation of this inner can 37 can force this friction lining 391 to follow rotation; but the packing state between Gai brake sheet of this torsion shaft 38 Ji 392 disengaging and this inner can 37 keeps motionless, is not damaged to protect this propulsion source 20.

The utility model second embodiment is also a power winch 1, large cage structure and action and efficacy are all same as shown in Fig. 1 in appearance, therefore same area is no longer added to repeat, and in the second embodiment, all tectonic positions are same as the first embodiment and all adopt identical title and numbering, to facilitate understanding.Different from the first embodiment be in, the second embodiment is arranged in the composition of speed reduction gearing " torsion limiting mechanism ".Refer to shown in Fig. 6-9, the power winch 1 of the utility model second embodiment is behind the position of the bonnet 301 and interior toroidal shell 31 of taking this drop-gear box 30 apart, toroidal shell 43 and a first planet gear cluster 321 in one second is had to appear, this in second toroidal shell 43 inner edge be an inner circular tooth 431, this first planet gear cluster 321 belongs to the ground floor in this speed reduction gearing 32, by three identical miniature gearss, axle center is jointly plugged on a pedestal 41 and a lid 42 and forms triangular form arrangement, wherein, these pedestal 41 central authorities have a perforation 411, the face facing these miniature gearss offers a large storage tank 412, its inner rim is provided with some little Rong caves 413, surrounding is provided with three inserting holes 414, this lid 42 is that central authorities have a perforation 421 and around go up and be provided with three inserting holes 424, during assembling, namely these inserting holes 414,424 to be planted location respectively for two end axle center of three miniature gearss, 411,421 i.e. corresponding cooperations and these are bored a hole.

There is a torsion limiting mechanism B, be made up of torsion shaft 48, friction lining 491, brake sheet 492, dish type elastic component 493, adjustment steady ring 494 and a location volution 495, wherein, what an axis was established in this torsion shaft 48 inside wears groove 481, be fed through for this major axis 21 interval shape, the reverse externally threaded spiral shell section 483 of a bit of tool of outer ring forming, outer shroud is selected a place and offered an axially deep cave, location 485, and rear end is tool one soldered tooth 486 then; This friction lining 491 is the ring-type lamellar body of a surperficial tool rubbing effect, outer shroud has more some little beads 4911, and the size of this friction lining 491 and these little beads 4911 just and the large storage tank 412 of this pedestal 41 and little Rong cave 413 corresponding matching; This brake sheet 492 is the ring-type lamellar body making material shaping, and inner edge has a positioning convex body 4921; This dish type elastic component 493 is concave arc shape and the tool elasticity of compression; This adjustment steady ring 494 outer shroud has most spacer 4941, can through selecting to this location volution 495 direction deviation; This location volution 495 has the axis hole 4951 of the reverse negative thread of a tool, and on outer shroud, be provided with several detent 4952 be symmetrical set, and can support into stop for selected location sea whelk 4941 deviation.

Refer to shown in Fig. 9, during assembling, first this torsion shaft 48 was placed Gai brake sheet 492 of this dish type elastic component 493 Ji, and the positioning convex body 4921 of Gai brake sheet 492 of Shi enters in the cave, location 485 of this torsion shaft 48, then this torsion shaft 48 was placed the perforation 411 of this pedestal 41, Gai brake sheet 492 of Shi is attached at this pedestal 41 back side, then this friction lining 491 is received into the large storage tank 412 of this pedestal 41 with the state in its little bead 4911 these little Rong caves 413 required in pairs, and just placed for this torsion shaft 48, then this adjustment steady ring 494 and location volution 495 are sequentially sheathed in this torsion shaft 48, and make the axis hole 4951 of this location volution 495 and this spiral shell section 483 do compactness to be spirally connected and to engage, until this torsion shaft 48 of packing, dish type elastic component 493, brake sheet 492, pedestal 41, friction lining 491, till adjustment steady ring 494 and location volution 495 (also by both this torsion limiting mechanism B and this pedestal 41 packing) in addition, certainly its packing degree (i.e. the amount of the being spirally connected number of axis hole 4951 and spiral shell section 483) torsion that can must bear depending on propulsion source 20 and adjust selected (torsion that propulsion source 20 can bear is directly proportional to packing degree), when after selected packing degree, the spacer 4941 of this adjustment steady ring 494 detent 4951 deviation of corresponding (vicinity) on this location volution 495 is supported into, with system, this location volution 495 cannot be rotated to exit, not corresponding (vicinity) namely will not bend to the spacer 4941 of detent 4951, finally, this pedestal 41 and three miniature gearss and this lid 42 three are combined into this first planet gear cluster 321, then this first planet gear cluster 321 is inserted this in second in toroidal shell 43 containing this torsion limiting mechanism B entirety, make inner circular tooth 431 bridle joint of the tooth of three miniature gears outer most edge and this toroidal shell 43 in second, the soldered tooth 486 of this torsion shaft 48 can stretch into this in second in toroidal shell 43 simultaneously, be located at this in second more inner other layer of compound planet gear belonging to speed reduction gearing 32 of toroidal shell 43 engage, then aforesaid section of axle 33 tool soldered tooth 331 and the end of engaging groove 333 stretch into this interior toroidal shell 31 central perforation 311 in after, a bearing 432 can be passed support by it, be inserted in this engaging groove 333 (as shown in figs. 5 and 10) by aforesaid C shape clasp 336 again, cannot exit arbitrarily to limit this section of axle 33, in process, namely the soldered tooth 331 of this section of axle 33 is planted in space that three miniature gearss cross jointly, soldered tooth 331 and with the tooth bridle joint of three miniature gears inner edge, finally interior toroidal shell 31 and bonnet 301 lid are covered.

When starting this propulsion source 20 (no matter exporting positive power or reverse power), after power arrives this section of axle 33, namely drive three of this first planet gear cluster 321 miniature gearss along person this in second the inner circular tooth 431 of toroidal shell 43 to detour rotation, cause the state of this first planet gear cluster 321 unitary rotation, now because this torsion limiting mechanism B and this pedestal 41 are in packing state, so namely this torsion limiting mechanism B follows this first planet gear cluster 321 synchronous axial system.When this propulsion source 20 stops (may be stop via manipulation or stop because of unexpected power-off), this first planet gear cluster 321 and this torsion limiting mechanism B also follow stopping at once, the reverse torsion that right load-carrying produces, this torsion limiting mechanism B and this first planet gear cluster 321 to be promoted produce rotate backward action via the interlock of other layer of compound planet gear on this cable wire and this speed reduction gearing 32, when this reverse torsion be this propulsion source 20 cannot bear time, then oppositely torsion can force this this torsion shaft 48 to rotate backward, now follow propulsion source 20 because of this section of axle 33 and this first planet gear cluster 321 to stop operating, therefore rotating backward of this torsion shaft 48 can force Gai to follow rotation by brake sheet 492, but this pedestal 41 and this friction lining 491 depart from Yu the packing state between Gai brake sheet 492 keeps motionless, do not damaged to protect this propulsion source 20.

The utility model the 3rd embodiment is both a power winch 1, large cage structure and action and efficacy are all same as shown in Fig. 1 in appearance, therefore same area is no longer added to repeat, and the 3rd all tectonic positions in embodiment be same as first and second embodiment and all adopt identical title and numbering, to facilitate understanding.Different from first and second embodiment be in, the 3rd embodiment is when " torsion limiting mechanism " is arranged on propulsion source outputting power.Refer to shown in Figure 10-13, the power winch 1 of the utility model the 3rd embodiment has soldered tooth 221 in the front end, axle center 22 of propulsion source 20; There is a sleeve 23, the end corresponding with this axle center 22 forms the joint internal tooth 231 of ring-type in, planted by the soldered tooth 221 in this axle center 22 and the joint internal tooth 231 of this sleeve 23 and be socketed, this sleeve 23 is made to reach to be connected with this axle center 22 and engage, this sleeve 23 is then shaped to a large storage tank 232 away from the end in this axle center 22, and its inner rim outermost section is more provided with most little Rong cave 233.

There is a torsion limiting mechanism C, by a torsion shaft 58, one friction lining 591, Yi brake sheet 592, one dish type elastic component 593, one adjustment steady ring 594 and a location volution 595 formed, wherein, this torsion shaft 58 inside is provided with one, plant and engage in clip end 212 for non-round shape (such as can be hexagonal shape) set in aforementioned major axis 21 corresponding end, the reverse externally threaded spiral shell section 583 of shaping a bit of tool on this torsion shaft 58 outer shroud, outer ring edge is selected a place and offered an axially deep cave, location 585, this friction lining 591 is the ring-type lamellar body of a surperficial tool rubbing effect, outer shroud has more some little beads 5911, and the size of this friction lining 591 and these little beads 5911 just and the large storage tank 232 of this sleeve 23 and little Rong cave 233 corresponding matching, this brake sheet 592 is the ring-type lamellar body making material shaping, and inner edge has a positioning convex body 5921, this dish type elastic component 593 is concave arc shape and the tool elasticity of compression, this adjustment steady ring 594 outer shroud has most spacer 5941, can through selecting to this location volution 595 direction deviation, this location volution 595 has the axis hole 5951 of the reverse negative thread of a tool, and on outer shroud, be provided with several detent 5952 be symmetrical set, and can support into stop for selected location sea whelk 5941 deviation.

Refer to shown in Figure 13, during assembling, this torsion shaft 58 was sequentially placed this friction lining 591, brake sheet 592, dish type elastic component 593, adjustment steady ring 594 and location volution 595, this friction lining 591 is made to be attached at the back side at this torsion shaft 58 plate-like position, and the positioning convex body 5921 of Gai brake sheet 592 of Shi enters in the cave, location 585 of this torsion shaft 58, and make the axis hole 5951 of this location volution 595 and the spiral shell section 583 of this torsion shaft 58 do compactness to be spirally connected and to engage, until this torsion shaft 58 of packing, friction lining 591, brake sheet 592, dish type elastic component 593, till adjustment steady ring 594 and location volution 595 (also by this torsion limiting mechanism C packing) in addition, be the torsion that can bear depending on propulsion source 20 as its packing degree (i.e. the amount of the being spirally connected number of axis hole 5951 and spiral shell section 583) and adjust selected (torsion that propulsion source 20 can bear is directly proportional to packing degree), when after selected packing degree, the spacer 5941 of this adjustment steady ring 594 detent 5951 deviation of corresponding (vicinity) on this location volution 595 is supported into, with system, this location volution 595 cannot be rotated to exit, not corresponding (vicinity) namely will not bend to the spacer 5941 of detent 5951, finally this torsion limiting mechanism C is received into the large storage tank 232 of this sleeve 23, and make the little bead 5911 of the majority of this friction lining 591 corresponding little Rong cave 233 inner position receiving into this sleeve 23 one to one, then can for the clip end 212 of this major axis 21 plant this torsion shaft 58 clamping groove 581 in reach to connect and engage, the clip end 211 of this major axis 21 another end is because being inserted in corresponding connection part, therefore two ends of this major axis 21 all can be subject to position limitation and cannot deviate from arbitrarily.

When starting this propulsion source 20 (no matter exporting positive power or reverse power), power arrives on this sleeve 23 via this axle center 22, then by the little bead 5911 of majority corresponding little Rong cave 233 inner position receiving into this sleeve 23 one to one of this torsion limiting mechanism C packing itself and this friction lining 591, and the clip end 212 of this major axis 21 be inserted in this torsion shaft 58 clamping groove 581 in reach the relation connecting and engage, namely this torsion limiting mechanism C and this major axis 21 are driven synchronous axial system by this sleeve 23.When this propulsion source 20 stops (may be stop via manipulation or stop because of unexpected power-off), this sleeve 23 and this major axis 21 follow stopping at once, the reverse torsion that right load-carrying produces, this major axis 21 can be promoted via the interlock of this cable wire and this speed reduction gearing 32, this torsion limiting mechanism C and this sleeve 23 produce and rotate backward action, when this reverse torsion be this propulsion source 20 cannot bear time, then oppositely torsion can force this this torsion shaft 58 to rotate backward, now follow propulsion source 20 because of this sleeve 23 to stop operating, therefore rotating backward of this torsion shaft 58 can force Gai to follow rotation by brake sheet 592, but this sleeve 23 and this friction lining 591 depart from Yu the packing state between Gai brake sheet 592 keeps motionless, do not damaged to protect this propulsion source 20.

Disclosed from above three embodiments, in the power transmission process that the utility model to be mainly transferred to via major axis 21 by propulsion source 20 outputting power between speed reduction gearing 32 at power winch, selectivity installing one " torsion limiting mechanism ", and before the speed reduction gearing that power enters in drop-gear box can be arranged on (that is in speed reduction gearing front end), also can be set directly in the composition of speed reduction gearing, when also can be arranged on propulsion source outputting power, with the reverse torsion produced when power winch bearing load exceed propulsion source can bear time, timely disconnection power transmission, to guarantee that the use of propulsion source 20 can not exceed its load-carrying capacity, occur to avoid damaging situation.

Claims (4)

1. a power winch torque force limiting device, textural have a support body, and a propulsion source being installed in this support body side, possesses the ability of outputting power; One drop-gear box being installed in this support body opposite side, inside is provided with a speed reduction gearing, accepts the power transmission of this propulsion source via a major axis, to carry out deceleration effort; And one is arranged at the middle cable pulley of this support body, accept the power drive rotation that this drop-gear box exports; By this propulsion source outputting power via in the power transmission process long shaft transmission to speed reduction gearing, be equiped with a torsion limiting mechanism; It is characterized in that: this torsion limiting mechanism is made up of a torsion shaft, a friction lining, a brake sheet, a dish type elastic component, an adjustment steady ring and a location volution, wherein, what an axis was established in this torsion shaft inside wears groove, front end is also shaped to a clamping groove, outer ring forming one spiral shell section, and offer an axially deep cave, location; This friction lining is the ring-type lamellar body of a surperficial tool rubbing effect; This brake sheet is the ring-type lamellar body making material shaping, and inner edge has a positioning convex body; This dish type elastic component is concave arc shape and the tool elasticity of compression; This adjustment steady ring outer shroud has most spacer, through selecting to this volution direction, location deviation; This location volution has the axis hole of the reverse negative thread of a tool, and on outer shroud, be provided with several detent be symmetrical set, and can support into stop for selected location sea whelk deviation.

2. power winch torque force limiting device according to claim 1, it is characterized in that: before this torsion limiting mechanism is arranged on the speed reduction gearing that power enters in drop-gear box, an inner can is had to be connected with this speed reduction gearing, this inner can one end offers a perforation, during assembling, this torsion shaft placed the perforation of this friction lining and this inner can, this friction lining is made to attach this torsion shaft, then be sheathed on outside this major axis by the groove of wearing of this torsion shaft, and make the clip end of this major axis end plant into contiguity joint in the clamping groove of this torsion shaft, in this inner can is outer, Gai brake sheet is sheathed in this torsion shaft again, and make its positioning convex body enter in this cave, location, then by this dish type elastic component, adjustment steady ring and location volution are sequentially sheathed in this torsion shaft, and the axis hole of this location volution is spirally connected with this spiral shell section engage, until this torsion shaft of packing, friction lining, inner can, brake sheet, dish type elastic component, adjustment steady ring and location volution, again the detent deviation that the spacer of this adjustment steady ring is corresponding on this location volution is supported into, system makes this location volution rotate to exit.

3. power winch torque force limiting device according to claim 1, it is characterized in that: this torsion limiting mechanism is arranged in the composition of speed reduction gearing, this speed reduction gearing has a first planet gear cluster, by three identical miniature gearss, axle center is jointly plugged on a pedestal and a lid and forms triangular form arrangement, these pedestal central authorities have a perforation, the face facing this miniature gears offers a large storage tank, its inner rim is provided with some little Rong caves, these lid central authorities have a perforation, the perforation of this pedestal is corresponding with the perforation of this lid, this friction lining outer shroud has more some little beads, during assembling, this torsion shaft placed this dish type elastic component Ji Gai brake sheet, the positioning convex body of Gai brake sheet enters in the cave, location of this torsion shaft, then this torsion shaft placed the perforation of this pedestal, Gai brake sheet of Shi is attached at this pedestal back side, then this friction lining receives into the large storage tank of this pedestal with the state in its little bead this little Rong cave required in pairs, and placed for this torsion shaft, then this adjustment steady ring and location volution are sequentially sheathed in this torsion shaft, the axis hole of this location volution is spirally connected with this spiral shell section engage, until this torsion shaft of packing, dish type elastic component, brake sheet, pedestal, friction lining, adjustment steady ring and location volution, again the detent deviation that the spacer of this adjustment steady ring is corresponding on this location volution is supported into, system makes this location volution rotate to exit.

4. power winch torque force limiting device according to claim 1, it is characterized in that: when this torsion limiting mechanism is arranged on propulsion source outputting power, the axle center of this propulsion source is bonded to a sleeve, this sleeve is then shaped to a large storage tank away from the end in this axle center, its inner rim outermost section is more provided with most little Rong cave, this friction lining outer shroud has more some little beads, during assembling, this torsion shaft sequentially placed this friction lining, brake sheet, dish type elastic component, adjustment steady ring and location volution, this friction lining is made to invest this torsion shaft, and the positioning convex body of Gai brake sheet of Shi enters in the cave, location of this torsion shaft, and the axis hole of this location volution is spirally connected with the spiral shell section of this torsion shaft engage, until this torsion shaft of packing, friction lining, brake sheet, dish type elastic component, adjustment steady ring and location volution, again the detent deviation that the spacer of this adjustment steady ring is corresponding on this location volution is supported into, system makes this location volution rotate to exit, and then this torsion limiting mechanism is received into the large storage tank of this sleeve, and make the little bead of this friction lining corresponding little Rong cave inner position receiving into this sleeve one to one, and in the clamping groove of this torsion shaft of being planted the clip end of this major axis, reach connection joint.